Henry belcher and frederick easom



No. 620,832. Patented Mar. 7, I899.

. H. BELCHER & F. EASOM.

FRAME JOINT.

(Application filed May 10, 1897.) I

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' UNITED STATES PATENT OFFICE..

HENRY BELCHER AND FREDERICK EASOM, OF BEESTON, ENGLAND.

FRAME-JOINT.

SPECIFICATION forming part of Letters Patent No. 620,832, dated March 7, 1899.

Application filed May 10, 1897. Serial No. 635,893- (No model.) I

To ctZZ whom it may concern:

Be it known that we, HENRY BELCHER and FREDERICK EAsOM, subjects of the Queen of Great Britain, residing at Beeston, England, have invented certain useful new or improved means for detachably fixing the ends of the frame-tubes and other tubular parts in bicycles, tricycles, and other Velocipedes and motor-vehicles in their lugs and sockets; and we do hereby declare that the following is a full,

clear, and exact description of the invention,

hereinafter described, and illustrated in the accompanying drawings,fordetachably fixing the ends of the frame-tubes and other tubular parts of velocipedes in their lugs and sockets, whereby a very secure attachment of the said tubes and parts can be readily and quickly effected, and when required for transit, storage, or repair the said tubes and parts may be readily detached and packed into a small. compass. Further, by the arrangements constituting our invention the manufacture of cycle-frames and the like is simplified and the temper of the metal of the tubes is not interfered with. The said arrangements also provide a more efficient connection of the frametubes and other tubular parts of velocipedes than is obtained in detachable joints of the ordinary construction, the accidental detachment of joints constructed according to our invention being practically impossible.

Our invention is especially useful Where the frame-tubes and other tubular parts of velocipedes and like vehicles are made of aluminium or aluminium alloys in consequence of the difficulty which exists in obtaining a secure attachment of the parts of articles made of aluminium or aluminium alloys by brazing.

We will describe our invention in connec lion with the attachment of the top horizontal tube of the frame of a safety-bicycleto the top lug of the said frame.

Figure 1 of the accompanying drawings is a bottom plan view of the top lug and portion of the top horizontal tube of a safety-bicycle frame, the said tube being fixed in the said lug by one of the improvements constituting our invention; and Fig. 2 is a crosssection of the same, taken on the dotted lineman, Fig. 1.

According to our invention we make a slit a in the lug a, and We make circular holes in the opposite sides of the lug and in the opposite sides of the ends of the tube b, which holes when the tube 1) is in its proper position in the lug coincide. lug and tube we pass a screw-bolt c, the slit lug a being tightened on the end of the tube 1), so as to fix the said tube in place by the screwing up of a screw-nut d on the threaded end of the screw-bolt c. In order to prevent the turning of the screw-bolt c on the screwing home of the screw-nut d,'we make on the under side of the head of the bolt 0 a teat or projection c, and we make in one side of the circular hole in the lug a, against which the head of the screw-bolt bears, a notch for re ceiving the teat or projection 0.

- WVe support the tube 6 internally by fixing a crossing tube or stay 6 therein or by providing the said tube b with a solid supporting-block, preferably of aluminium, with a cross-hole for the bolt 0 to pass through, so as to prevent any change in the circular configuration of the end of the tube 6 on the screwing home of the nut 61 for the purpose of binding the sides of the lug a on the sides of the tube 6.

The application of our invention to the fixing of other parts of cycle and like frames in their lugs and to the fixing together of the tubular parts of handle-bars, seat-pillars, and other tubular parts of Velocipedes and 'like vehicles differs in no essential respect from its application to the fixing of the top horizontal tube of a safety-bicycle in the top lug, as hereinbefore described and illustrated.

Further, we wish it to be understood that our improvements are applicable to the fix Through the said holes in the ing of tubes and other parts in theirlugs and sockets, which tubes and other parts have a figure in cross-section other than circular.

Having now particularly described and ascertained the nature of our invention and in what manner the same is to be performed, We

7 declare that We claim as our invention-- operating when screwed up to clamp or bind I 5 the split lug or socket about said tube and a cross tube or stay arranged within the tube and about the bolt and operating to support the tube internally and prevent change of configuration in the tube when the lug or 20 socket is clamped thereover, substantially as described.

HENRY BELCHER. FREDERICK EASOM.

PL: iii

Witnesses:

MARK SHAW, ALFRED CLARKE. 

